Run misspell self-hosted & from maintained repo

Run it with our own machine & take it from the repo that
is maintained.

.github/workflows/misspell.yml

@@ -8,13 +8,18 @@ concurrency:
 
 jobs:
   static-checks:
-    runs-on: ubuntu-latest
+    runs-on: edge-example-ci
     steps:
       - name: Check out code
         uses: actions/checkout@v4
-      - name: Run misspell (findings may not increase)
+      - name: Install Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.20'
+      - name: Install & run misspell
         if: always()
         run: |
-            curl -L -o ./install-misspell.sh https://git.io/misspell
-            sh ./install-misspell.sh
-            bin/misspell -i mosquitto .
+            # The original misspell is not maintained anymore, use the one
+            # from golangci instead
+            go install github.com/golangci/misspell/cmd/misspell@latest
+            misspell -i mosquitto .